What is another way of specifying the test command in bash?

[vaquitasos]

The test command with bash can be used on the command line or in a shell script.

e.g. : of the command line usage.

$ test -d /var/log/samba || echo "Log directory does not exist"
Log directory does not exist

Another way of specifying the test command can be written as follows: the test keyword is dropped. The square brackets are used.

$ [ -d /var/log/samba ] || echo "Log directory does not exist"
Log directory does not exist